An asymmetric t BuPOCNTriaz type pincer ligand containing a triazole arm was developed and used to generate iridium pincer complexes with different oxygen atom binding ancillary ligands. The structure and reactivity of the complexes (t BuPOCNTriaz)Ir(H)(O2CCH3), (t BuPOCNTriaz)Ir(H)(acac), and (t BuPOC)Ir(H)(O2CCF3) and its cationic derivatives were studied. The complexes could be successfully employed in the catalytic transfer dehydrogenation of alkanes as well as of unsaturated heterocycles.
Cardozo et al. (Wed,) studied this question.
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